/Engine/Source/Runtime/MovieScene/Public/Channels/MovieSceneChannelProxy.h
Add a new channel to the proxy. Channel's address is stored internally as a voic* and should exist as long as the channel proxy does
template<typename ChannelType> void Add ( ChannelType & InChannel, const [FMovieSceneChannelMetaData](API\Runtime\MovieScene\Channels\FMovieSceneChannelMetaData) & InMetaData )